Armored Mewtwo returns to Pokémon GO on Saturday, September 5, and Sunday, September 6, 2026, during the 2026 Pokémon GO Fest Mega-Finale. It will appear in Tier 5 Raids from 10 a.m. to 6 p.m. local time on both days. The official announcement confirms that its Shiny variant will not be available during this return.
That gives players eight hours per day, or 16 hours in total. Because the schedule follows local time, the relevant window is the one shown in each player’s area; there is no single worldwide opening time. The Pokémon GO news may accompany further details about the schedule.
Armored Mewtwo returns after a long absence
The return was announced on August 31, 2026, during the Pokémon World Championships in San Francisco. Pokémon GO associates this form of Mewtwo with the 2019 film Pokémon: Mewtwo Strikes Back—Evolution. Its last mentioned appearance in the game was in 2020, making this a limited opportunity for players who want to add or revisit the form.
The two-day schedule also sets a firm end point. The announcement provides no additional availability after Sunday, September 6, and the event-related information in ticket dedicated to the Mega-Finale adds no specific regional requirement beyond the local-time schedule.
In practical terms, Raid planning matters more than a global countdown. Each area receives its own eight-hour window, but both daily sessions end at 6 p.m., leaving no later evening period to defer an encounter. Players will need to check the local event timing before organizing a session.
Bonuses and access details are still unannounced
The announcement does not specify a ticket, price, bonuses, rewards, or catch rates for these Raids. Those details could change how players prepare, but there are not yet precise rules to apply. It also does not indicate that another opportunity to encounter Armored Mewtwo will follow the Mega-Finale.
For now, the confirmed window is limited to 16 total hours: 10 a.m. to 6 p.m. local time on September 5 and 6, 2026, in Tier 5 Raids. The missing Shiny variant narrows the collection incentive, while the short, fixed schedule makes the local timing the key detail to track.
